/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Sampling/MeshMapBaker.h
Computes the connected UV triangles and returns an array containing the mapping from triangle ID to unique UV chart ID. If the mesh has no UVs, the UVCharts will be initialized to 0.
static void ComputeUVCharts ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) & Mesh, [TArray](API\Runtime\Core\Containers\TArray)< int32 > & MeshUVCharts )